Gross Reservoir
Expansion Project
Gross Reservoir
Expansion Project
This short video summarizes Denver Water’s community commitments based on years of study and robust outreach to Gross Reservoir neighbors. Also, read more on our Community Responsiveness page and on DenverWaterTAP.org !
Jeff Martin, Denver Water’s program manager on the Gross Reservoir Expansion Project sits for an interview about the project goals, core values and minimizing inconvenience to our neighbors.
Environmental Commitments

Online Office Hours
Out of concern for the safety of our employees and community, Denver Water has suspended in-person office hours and events indefinitely.
We do offer online one-on-one appointments with our project representatives who can answer your questions about the Gross Reservoir Expansion Project. We invite you to search for an available time and book an online meeting here.
We look forward to speaking with you!
News
Denver Water statement on seeking dismissal of its appeal of 1041 case
July 29, 2020 - A year ago, Denver Water submitted an application with Boulder County to begin the 1041 process related to the Gross Reservoir expansion. At the same time, we sought clarity in the courts on whether the expansion was subject to that process. Boulder...
Final federal approval secured for Gross Reservoir Expansion Project
DENVER — July 17, 2020 — Today, the Federal Energy Regulatory Commission ordered Denver Water to proceed with design and construction to expand Gross Reservoir in Boulder County. Seventeen years ago, Denver Water began the federal environmental permitting process that...
Virtual Appointment Booking
Have you heard that the Gross Reservoir Expansion Project now offers virtual one-on-one appointments? Due to continued social distancing guidelines, we are not able to host our regular office hours at our public information yurt this year. However, we would still love...
News
Virtual Appointment Booking
Have you heard that the Gross Reservoir Expansion Project now offers virtual one-on-one appointments? Due to continued social distancing guidelines, we are not able to host our regular office hours at our public information yurt this year. However, we would still love...
Notice of utility locate survey work on Gross Dam Road
Beginning May 25, Lamb-Star Engineering, LLC, through a subcontract with Stantec and Denver Water, as part of Stantec’s work on roadway design for safety improvements of Gross Dam Road will be completing utility location surveys along Gross Dam Road. This work will...
Boating opens May 22 at Gross Reservoir; plan for possible crowds
Gross Reservoir opens for boating Friday, May 22, and recreation managers want visitors to be aware of the potential for crowds, slow traffic, lower water levels and parking challenges. The reservoir, southwest of Boulder, is popular with kayakers and others using...
Notice of on-site closure of Gross Dam Road
COAL CREEK CANYON — April 24, 2020 — Access to trails, viewpoints and shorelines on the south side of Gross Reservoir will be closed on weekdays between Monday, April 27, and Friday, May 8, for watershed protection activities in coordination with the Colorado State...